Facebook is basically a glorified phone book at this point. Odds are you have more than 500 friends on the site to track.

Enter Path, a lightweight social networking app that caps the number of friends you can have to 150. That number should sound familiar. It's the Dunbar Number — a theoretical limit to the number of connections you can meaningfully track at any time.

Path is a much more elegant way of keeping track of those closest friends when compared to Facebook. It's a continuous timeline that includes locations, photos, videos and comments.

It makes you feel more involved with the world. It shows you all the things that happened while you were doing what you were doing. You'll feel okay with taking a picture of your food and putting it on Path — it's only so your close friends can find out what you're up to, not broadcasting stuff to the world.